Here's a variant of the frozen download problem.
I tried to download an MP3 from this total Flash site:
http://www.sonyclassics.com/junebug/main.html
I can't give you a direct link to the "page" or the file because they're hidden inside Flash (doncha just love it). Here's the click path to the download:
Click "MUSIC"
Click "Download George's Hymn"
Click the first "George's Hymn" link
OW flashes a blank window, the Downloads pop-up appears, with a progress bar but no icon or file name, and the download freezes (exactly like the background tab problem that several of us have reported).
Firefox manages to download the file (which turned out to be a Windows-format zip archive), but it leaves a empty white window overlaying the Flash page.
My guess is this is the Flash equivalent of the target="_blank" variant of this problem.
-- Ward
P.S. See the "Junebug" movie (now on DVD) before listening to the MP3. It's much better in the context of this excellent film.
[copy of my formal bug report]